Prospero (moon)
| Discovery | |||||||
|---|---|---|---|---|---|---|---|
| Discovered by | Matthew J. Holman, John J. Kavelaars, Brett J. Gladman, Jean-Marc Petit, and Hans Scholl | ||||||
| Discovered in | July 18, 1999 | ||||||
| Orbital characteristics | |||||||
| Mean radius | 16,243,000 km | ||||||
| Orbital eccentricity | 0.4431 | ||||||
| Orbital period | 1977.29 d | ||||||
| Inclination | 152° (to the ecliptic)[1] | ||||||
| Is a moon of | Uranus | ||||||
| Physical characteristics | |||||||
| Mean diameter | ~25 km (estimate)[1] | ||||||
| Surface area | ~2,000 km² (estimate) | ||||||
| Volume | ~8,000 km3 (estimate) | ||||||
| Mass | ~2.1×1016 kg (estimate) | ||||||
| Mean density | ~1.5 g/cm3 (estimate) | ||||||
| Surface gravity | ~0.0063 m/s2 (estimate) | ||||||
| Escape velocity | ~0.014 km/s (estimate) | ||||||
| Rotation period | ? | ||||||
| Axial tilt | ?° | ||||||
| Albedo | 0.04 (assumed)[1] | ||||||
| Surface temp. |
| ||||||
| Atmospheric pressure | 0 kPa | ||||||
Prospero is a small retrograde non-spherical moon of Uranus found on 1999-07-18 by the astrophysicist Matthew Holman and his team, and given designation S/1999 U 3. Confirmed as Uranus XVIII it was named after the sorcerer Prospero in William Shakespeare's play The Tempest.
The orbital parameters suggest that it may belong, together with Sycorax and Setebos to the same dynamic cluster, suggesting common origin.[2] However, this suggestion does not appear to be supported by the observed colours. The moon appears grey in the visible light[3] , similar to Setebos but different from Sycorax (which is light red).
Prospero (moon) Media
Animation of discovery images to show Prospero's motion among background stars
Related pages
References
- ↑ 1.0 1.1 1.2 Scott S. Sheppard, David C. Jewitt, and Jan Kleyna An Ultradeep Survey for Irregular Satellites of Uranus: Limits to Completeness, The Astronomical Journal, 129 (2005), pages 518–525 . Preprint
- ↑ Grav, Tommy; Holman, Matthew J.; Gladman, Brett J.; Aksnes, Kaare Photometric survey of the irregular satellites,Icarus, 166,(2003), pp. 33-45. Preprint
- ↑ Tommy Grav, Matthew J. Holman, and Wesley C. Fraser Photometry of Irregular Satellites of Uranus and Neptune,The Astrophysical Journal, 613, (2004), pp. L77–L80. Preprint
Other websites
- Prospero Profile Archived 2007-06-08 at the Wayback Machine by NASA's Solar System Exploration
- David Jewiit pages
- Scott Sheppard pages
